Custom Logo Gold Stamping Sweet Cardboard Box with Slot for

What is up with this piece of cardboard inside the hard drive slot in cardboard box with slot Cardboard Cryogenic Vial Tube Storage box Shop Heathrow Scientific™ Cardboard Cryogenic Tube Storage Box, 25 x 25 place with grid for 2 mL tubes at cardboard box with slot The feature indicated in img_1 would most likely be called a hole or slot It could be called a gap as well, but that is more commonly taken

cardboard slot sculpture cardboard box stronger type of box made of leather